noun
mainframe
MAYN-fraym
noun
1
A large, powerful computer used by big organizations to handle huge volumes of data and many users at once.
"The bank still runs its core transactions on an old mainframe."
How to Use Mainframe
Learner’s notesIn plain EnglishA big central computer built for heavy, continuous workloads, as opposed to a desktop PC or server.
Common pairings
run on a mainframe
mainframe computer
legacy mainframe
Word Forms
mainframes plural
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The bank still runs its core transactions on an old _____.
Etymology
From main + frame.